Logitech R400 Wireless Presenter

Color: Black

Laser Class: Class 2 Laser

Max Output: Less than 1mW

Wave Length: 640～660nm (red light)

Battery type: 2 AAA batteries

Battery life (Laser pointer): 20-hour maximum

Battery life (Presenter): 1050-hour maximum

Wireless operating distance: Approx 10m 2

Wireless technology: 2.4 GHz wireless technology